AWS E320 vs. CR012A Copper

AWS E320 belongs to the iron alloys classification, while CR012A copper belongs to the copper alloys. There are 20 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is AWS E320 and the bottom bar is CR012A copper.

AWS E320 (W88021) Weld Metal EN CR012A (CuAg0.07) Silver-Bearing Tough Pitch Copper

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		200
Elastic (Young's, Tensile) Modulus, GPa		120

Elongation at Break, %		34
Elongation at Break, %		15

Poisson's Ratio		0.28
Poisson's Ratio		0.34

Shear Modulus, GPa		77
Shear Modulus, GPa		43

Tensile Strength: Ultimate (UTS), MPa		620
Tensile Strength: Ultimate (UTS), MPa		220

Thermal Properties

Latent Heat of Fusion, J/g		300
Latent Heat of Fusion, J/g		210

Melting Completion (Liquidus), °C		1410
Melting Completion (Liquidus), °C		1090

Melting Onset (Solidus), °C		1360
Melting Onset (Solidus), °C		1040

Specific Heat Capacity, J/kg-K		460
Specific Heat Capacity, J/kg-K		390

Thermal Expansion, µm/m-K		14
Thermal Expansion, µm/m-K		17

Otherwise Unclassified Properties

Base Metal Price, % relative		38
Base Metal Price, % relative		33

Density, g/cm³		8.2
Density, g/cm³		9.0

Embodied Carbon, kg CO₂/kg material		6.5
Embodied Carbon, kg CO₂/kg material		2.7

Embodied Energy, MJ/kg		91
Embodied Energy, MJ/kg		42

Embodied Water, L/kg		220
Embodied Water, L/kg		360

Common Calculations

Stiffness to Weight: Axial, points		13
Stiffness to Weight: Axial, points		7.2

Stiffness to Weight: Bending, points		24
Stiffness to Weight: Bending, points		18

Strength to Weight: Axial, points		21
Strength to Weight: Axial, points		6.8

Strength to Weight: Bending, points		20
Strength to Weight: Bending, points		9.0

Thermal Shock Resistance, points		16
Thermal Shock Resistance, points		7.8

Alloy Composition

Bismuth (Bi), %		0
Bismuth (Bi), %		0 to 0.00050

Carbon (C), %		0 to 0.070
Carbon (C), %		0

Chromium (Cr), %		19 to 21
Chromium (Cr), %		0

Copper (Cu), %		3.0 to 4.0
Copper (Cu), %		99.85 to 99.94

Iron (Fe), %		31.8 to 43.5
Iron (Fe), %		0

Manganese (Mn), %		0.5 to 2.5
Manganese (Mn), %		0

Molybdenum (Mo), %		2.0 to 3.0
Molybdenum (Mo), %		0

Nickel (Ni), %		32 to 36
Nickel (Ni), %		0

Niobium (Nb), %		0 to 1.0
Niobium (Nb), %		0

Oxygen (O), %		0
Oxygen (O), %		0 to 0.040

Phosphorus (P), %		0 to 0.040
Phosphorus (P), %		0

Silicon (Si), %		0 to 0.6
Silicon (Si), %		0

Silver (Ag), %		0
Silver (Ag), %		0.060 to 0.080

Sulfur (S), %		0 to 0.030
Sulfur (S), %		0